Milwaukee weather in August

In August, Milwaukee sees average daytime highs of 77°F and overnight lows near 65°F, with 3.6 in of rain across 10.7 wet days and about 13.8 hours of daylight. It is the 2nd-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 77°F through the month. The sky is clear or mostly clear about 37% of the time in August, and the air most often feels humid.

Daylight stretches from about 14 h 24 min at the start of August to 13 h 06 min by month's end. Set against the rest of the year, August is Milwaukee's 3rd-clearest and 12th-windiest month. For the whole year in context, see Milwaukee's year-round climate.

Daytime high
77°
2nd warmest
Overnight low
65°
11th coldest
Rainfall
3.6 in
10.7 wet days
Daylight
13 h 48 min
5:02 AM – 6:49 PM
Cloud cover
54%
3rd clearest
Wind
8 mph
12th windiest
Solar energy
5.38 kWh/m²
Travel score
6.8
out of 10

Milwaukee is city in and county seat of Milwaukee County, and largest city in State of Wisconsin, United States.

Density
2,248/km²
people per km²
Founded
1846

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 77°F through the month.

A typical August day in Milwaukee reaches about 77°F in the afternoon and slips back to 65°F overnight — a 12°F spread between the day's warmth and the night's chill. On most days the high lands between 70°F and 85°F. Set against its neighbours, August runs about 1°F cooler than July and about 7°F warmer than September.

50°60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
17966
27966
37966
47866
57866
67866
77866
87866
97866
107865
117865
127865
137865
147765
157765
167765
177765
187765
197765
207765
217765
227765
237765
247765
257764
267764
277664
287664
297664
307664
317663

How August really feels in Milwaukee

Once humidity and wind are folded in, August averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Milwaukee weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan29° / 17°2.08.96.89.20.0
Feb31° / 19°1.975.510.20.0
Mar40° / 28°2.49.54.111.60.2
Apr50° / 38°4.111.91.713.12.2
May62° / 48°3.611.6014.44.9
Jun73° / 60°3.510.8015.16.6
Jul79° / 66°3.210.1014.86.7
Aug77° / 65°3.610.7013.86.8
Sep71° / 58°3.09.2012.36.7
Oct58° / 46°3.19.10.210.84.4
Nov45° / 34°2.48.61.79.51.0
Dec34° / 24°2.28.55.48.90.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 19% of August, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25743
35644
45644
55644
65644
75545
85545
95545
105545
115545
125545
135545
145545
155446
165446
175446
185446
195545
205545
215446
225446
235545
245545
255644
265644
275743
285842
295842
305941
315941

Chance of precipitation in August

Any precipitation

Milwaukee gets around 3.6 in of rain over 10.7 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 34% and peaks near 36% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
234
334
434
534
633
733
833
933
1033
1132
1233
1333
1433
1533
1633
1734
1834
1935
2035
2135
2235
2336
2435
2535
2635
2734
2833
2933
3032
3131

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the humid band about 27% of days. Sticky, muggy-or-worse air turns up on roughly 33% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
112252824111
212252824101
312252824101
412262824100
512262824100
612262824100
713262724100
81326272490
91426272490
101426272490
111426272480
121526272480
131526272480
141525272570
151525272570
161625272670
171625272660
181624272760
191624272760
201624272760
211624272760
221624272760
231724262760
241724262760
251724262660
261825252660
271925252560
281925252560
292026242460
302226242360
312326232260

Wind in August

Winds average 8 mph in August, the calmest month.

Across August, daily wind ranges from about 8 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
18light breeze
28light breeze
38light breeze
48light breeze
58light breeze
68light breeze
78light breeze
88light breeze
98light breeze
108light breeze
118light breeze
128light breeze
138light breeze
148light breeze
158light breeze
168light breeze
178light breeze
188light breeze
198light breeze
208light breeze
218light breeze
228light breeze
238light breeze
248light breeze
258light breeze
268light breeze
278light breeze
288light breeze
298light breeze
308light breeze
318light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 24 min at the start of August to 13 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over August. Sunrise moves from 4:46 AM to 5:19 AM, and sunset from 7:09 PM to 6:24 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.44:467:09
214.44:477:08
314.34:487:07
414.34:497:06
514.24:507:04
614.24:517:03
714.24:527:02
814.14:547:01
914.14:556:59
1014.04:566:58
1114.04:576:56
1213.94:586:55
1313.94:596:53
1413.95:006:52
1513.85:016:51
1613.85:026:49
1713.75:046:47
1813.75:056:46
1913.65:066:44
2013.65:076:43
2113.65:086:41
2213.55:096:39
2313.55:106:38
2413.45:116:36
2513.45:136:34
2613.35:146:33
2713.35:156:31
2813.25:166:29
2913.25:176:28
3013.15:186:26
3113.15:196:24

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.38 kWh/m².

For context, solar energy here swings from a low near 1.49 kWh/m² to a high of 6.43 kWh/m² in June across the year — August's 5.38 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.8Bright
45.8Bright
55.8Bright
65.7Bright
75.7Bright
85.6Bright
95.6Bright
105.6Bright
115.5Bright
125.5Bright
135.5Bright
145.4Bright
155.4Bright
165.4Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.1Bright
265.1Bright
275.1Bright
285.0Bright
295.0Bright
305.0Bright
315.0Bright
Planning a trip in August

Is August a good time to visit Milwaukee?

Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.8
Sightseeing
1st-best month of the year
6.2
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Milwaukee for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Milwaukee in August

From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In August, Milwaukee sees daytime highs around 77°F and nights near 65°F. Worth packing: light clothes, rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

Sea temperature near Milwaukee in August

The nearest coast averages about 70°F in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 70°F and coldest in March near 36°F.

It's comfortable for a long swim from Jul 29 to Aug 30 — about 1.1 months when the water holds above 68°F.

30°40°50°60°70°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarm
Sea temperature (°F)Comfort
Jan38Bracing
Feb36Bracing
Mar36Bracing
Apr38Bracing
May42Bracing
Jun54Bracing
Jul67Cool
Aug70Refreshing
Sep66Cool
Oct56Bracing
Nov46Bracing
Dec41Bracing

UV index in Milwaukee in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Milwaukee peaks around June 20 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 20UV 9Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr6High
May8Very high
Jun9Very high
Jul8Very high
Aug7Very high
Sep5High
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Milwaukee in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Milwaukee is worst in July — around 17 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (October, 9 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1017 µg/m³Oct 249 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb13Moderate
Mar15Moderate
Apr15Moderate
May16Moderate
Jun17Moderate
Jul17Moderate
Aug16Moderate
Sep13Moderate
Oct9Good
Nov9Good
Dec10Good
Location & terrain

Where is Milwaukee?

Milwaukee sits at 43.0°N, 87.9°W, 617 ft above sea level, in United States. The nearest listed city is Wauwatosa, 5.0 mi away.

Topography around Milwaukee

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Milwaukee.

Within 2 miles, the terrain around Milwaukee has only modest variations in elevation — a maximum elevation change of 190 ft around an average of 617 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 469 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 846 ft.

The land around Milwaukee is covered by artificial surfaces (59%) and water (28%) within 2 miles, water (40%), artificial surfaces (30%) and trees (21%) within 10 miles, and water (46%) and cropland (21%) within 50 miles.

2 miles
190 ft
10 miles
469 ft
50 miles
846 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Wauwatosa 5.0 mi · West Allis 5.6 mi · Cudahy 6.2 mi · Greenfield 7.5 mi · South Milwaukee 9.3 mi · Brookfield 9.9 mi · Oak Creek 11 mi · New Berlin 11 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Milwaukee (43.0389°, -87.9065°, elevation 617 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).